Electrochemical analysis on compounds of the vitamin B6 family using glassy carbon electrodes

Gonzalez-Rodriguez, Jose and Sevilla, Jose Manuel and Pineda , Teresa and Blazquez , Manuel (2012) Electrochemical analysis on compounds of the vitamin B6 family using glassy carbon electrodes. International Journal of Electrochemical Science , 7 (3). pp. 2221-2229. ISSN 1452-3981

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Electrochemical Analysis on Compounds of the Vitamin B6 Family Using Glassy Carbon Electrodes
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Abstract

The electrochemical reduction of vitamin B6 group and related compounds has been performed at pH neutral using glassy carbon electrodes. Irreversible bi- or tetra-electronic processes controlled by diffusion on the top of the wave are observed for these substances by cyclic voltammetry. In most cases the first electron transfer was the rate determining step of the electrode process. In depth electroanalytical behaviour of the most important members of the vitamin-6 family, from a biological point of view, is also presented. Limits of detection (99, 59, 286 and 19 μM respectively), linearity ranges (200-1000, 100-800, 400-1600 and 40-200 μM respectively) precision as RSD(%) (0.45, 4.11, 6.45 and 4.98 % respectively) and recovery (%) values (99.7, 97.7, 104.4 and 98.9) for Pyridoxal, Pyridoxal-5’-Phosphate, Pyridoxamine and Pyridoxic Acid are presented. The use of glassy carbon electrodes for the analysis of urine samples gives an example of the potential use of these for the analysis of biological samples.

Item Type:Article
Keywords:voltammetry of Vitamin B-6, reduction reactions, voltammetry, electrochemistry, solid electrodes, colon-rectal cancer, analytical chemistry, bmjdoaj
Subjects:F Physical Sciences > F170 Physical Chemistry
F Physical Sciences > F110 Applied Chemistry
F Physical Sciences > F100 Chemistry
F Physical Sciences > F180 Analytical Chemistry
Divisions:College of Science > School of Life Sciences
ID Code:4941
Deposited By: Jose Gonzalez-Rodriguez
Deposited On:08 Mar 2012 22:02
Last Modified:05 Dec 2013 10:13

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